244154021 has 2 divisors, whose sum is σ = 244154022. Its totient is φ = 244154020.

The previous prime is 244154011. The next prime is 244154033. The reversal of 244154021 is 120451442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161544100 + 82609921 = 12710^2 + 9089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244154021 is a prime.

It is a super-2 number, since 2×244154021² = 119222371940936882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244154011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122077010 + 122077011.

It is an arithmetic number, because the mean of its divisors is an integer number (122077011).

Almost surely, 2^244154021 is an apocalyptic number.

It is an amenable number.

244154021 is a deficient number, since it is larger than the sum of its proper divisors (1).

244154021 is an equidigital number, since it uses as much as digits as its factorization.

244154021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 244154021 is about 15625.4286661199. The cubic root of 244154021 is about 625.0114310443.

The spelling of 244154021 in words is "two hundred forty-four million, one hundred fifty-four thousand, twenty-one".